Band-pass filters are common in serious contest stations and multi-operator setups, but what do they actually do… and do you really need one?
In this video I explain the difference between a notch filter and a band-pass filter, how modern transceivers already include front-end band-pass filtering, and why adding an external band-pass filter can further reduce unwanted signals and harmonics.
Using my own station as an example, I show why I use an external band-pass filter when running multiple stations at the same time, and discuss whether there are any benefits for a single-operator station.
We’ll also cover:
What a band-pass filter actually does
How it differs from a notch filter
Why flagship radios have sophisticated front-end filtering
Multi-station interference and harmonic suppression
Whether an external band-pass filter is worth the investment
I’d be interested to hear your thoughts. If you use an external band-pass filter, or you’ve found it made a noticeable difference in your station, let us know in the comments.
25 Watt Power Test: FM/AM & Sideband Performance #shorts
Testing the power output of this radio in FM and AM modes. FM on high power hits a surprising 25 watts, while AM peaks around 18 watts. Sideband audio also shows impressive results.
Unlimited Weather Satellite Images for $220.00 (NOAA GOES)
Nooelec makes a pretty cool kit that includes a parabolic dish, Software Defined Radio, Low Noise Amplifier and feed line for around $220.00. https://amzn.to/4wV2PFz
I am hoisting the antenna with this tripod: https://amzn.to/44xRHlV
Recommendations from the show:
As an Amazon Affiliate I earn from qualifying purchases
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📻 Xiegu G90: https://www.radioddity.com/?ref=bkobuwhc
📻 QRPLabs QMX: https://qrp-labs.com/qmx.html
Yaesu FT-891: https://dxengineering.pxf.io/VOmdQj
📻 ICOM IC-705: https://dxengineering.pxf.io/radvMD
📻 theQRPStation: https://theqrpstore.com/product/link500-4n/
📻 ICOM IC-7300MK2: https://dxengineering.pxf.io/QYyEG6
📻 Yaesu FTX-1: https://dxengineering.pxf.io/ZVQEmz
📡 You can get $10 off the VGC VN-N76 using the code "josh" here: https://www.verotelecom.com/VR-N76-Dual-Band-Handheld-Radio-p2511333.html?
📡 Wouxun HTs: HTs: https://www.buytwowayradios.com/?
🔋 Batteries: https://dxengineering.pxf.io/kOmnJd
🔋 Solar: https://dxengineering.pxf.io/Qj5q23
📻 Want the best HT antenna? Signal Stuff Signal Stick https://signalstuff.com/?ref=622
🚶♂️ Big list of ham radio hiking gear: https://amzn.to/4ojAxQP
🔋 W0AEZ Battery: https://w0aez.com/discount/hrcc5?ref=hrcc
📡 The POTA-20 mast: https://www.gigaparts.com/nsearch/?lp=JOSH
📡 Lil’ Dude Mast: https://www.hamradiodude.com/
📶 TH-DD74 B.B.Link: https://islandmagic.co/products/bb-link-adapter
📡 My Big List of No-Regret Gear: https://amzn.to/415oY6s
📡 My Favorite ham radio portable gear items! Check out Gigaparts for 2x the points off the gear I use the most!
https://www.gigaparts.com/nsearch/?lp=JOSH
📡 I recommend the Ed Fong J-Pole? https://www.kbcubed.com/DBJ-2H-Amateur-Ham-2m-70cm-Dual-Band-Portable-Rollup-Antenna-by-Ed-Fong-p406009746cmid=amsreGRvTmttM0k9&afid=Mkx1eE1uN2M0S1k9&ats=bHNrMHVhZ3lZcjQ9
📡 Chameleon Antennas make the most robust antennas on the market, check them out here: https://chameleonantenna.com?bg_ref=99VqhYXETt
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As an Amazon Associate I earn from qualifying purchases.
★ FOLLOW ME HERE ★
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📨 Physical Mail Josh Nass P.O Box 5101 Cerritos, CA 90703-5101
Music by Sonic D:
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Facebook.com/djsonicd
We are going to live test 3 different type types LIVE during a POTA activation. Di-Pole vs Vertical vs EFHW sloper. AND WE ARE DING IT LIVE.
New Tanker Radio Gear:
New Tank Radio Pillow – https://www.etsy.com/listing/4295008136/tank-radio-pillow-for-amateur-radio
New Tank Radio Black Out T Shirt – https://grapevineamateurradio.com/products/tank-radio-black-out-t-shirt-on-demand-order
Tank US Band Plan Pad – https://quirkyqrphamradios.etsy.com/listing/1657938891
Hoodies – https://grapevineamateurradio.com/products/tank-radio-hoodie-limited-time
Boonie Hats – https://www.gigaparts.com/tank-radio-logo-boonie-hat.html
Sticker Pack – https://grapevineamateurradio.com/collections/combo-packs/products/tank-radio-official-sticker-pack
Help support me by:
spooltenna – https://www.spooltenna.com/?sca_ref=11327622.GxC4hHpdaPs
RollerCam Website – https://classic.avantlink.com/click.php?tool_type=ml&merchant_link_id=6e7562a0-f7b0-4d9a-b15e-25ce3aedb94a&website_id=16611296-f891-4f8b-8010-5fa29c2cab5f
5% off selected Items at Gigaparts- https://www.gigaparts.com/nsearch/?lp=KG5AHJ%20INFLUENCER%20PAGE
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Tank Radios T-Shirt : https://grapevineamateurradio.com/collections/youtubers-bunch/products/tank-radio-short-sleeve-t-shirt-special-order
Follow me on:
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The Dayton Hamvention Film is finally out! Follow Dave as he makes his way through the crowds, shops and meets new people!
Subscribe:
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Videographed by Jon Casler and Edited by Heidi Kulbeth
#amateur radio
#ham radio
#technician license
#general license
#extra license
#ham radio training
#ke0og
#dave casler
#ham radio answers
#icom 7300
#antenna
#dipole
#end fed dipole
#mag loop
#magnetic loop antennas
To learn more about me, visit: https://dcasler.com
To support my channel financially, visit: https://dcasler.com/support (offers several options)
To pose an Ask Dave question, email to askdave@arrl.org. Feel free to include pictures or drawings to help clarify. I may answer your question directly, via an Ask Dave video, or in my monthly column "Ask Dave" in QST.
Theme music is "Sour Tennessee Red," by John Deley and the 41 Players, courtesy YouTube Music Library. You can listen to the entire song here: https://youtu.be/Vfc9sAQjJtc
I use drawings from OpenClipArt.org, including the "walking man"
Thanks to my sweet wife, Loretta, KBØVWW, for both audio and video assistance! (Her website is www.aldea-art.com.)
My primary website: http://www.dcasler.com
My publishing website: http://www.mtsneffelspress.com, where you can find my fantasy and science fiction books.
My Amazon author page, which lists my print and Kindle books: http://www.amazon.com/-/e/B00471I0Q4.
@N6ARAElectronics reminded me about a really cool padded organization bag perfect for ham radios. Here is how I have mine kitted out! https://evergoods.us/products/civic-access-pouch-2l
Alternatives to the EverGoods:
Tomtoc Organizer: https://amzn.to/4yJsOl9
Peak Design Tech Pouch: https://amzn.to/4bikKOb
Whats in my bag?
QRPLabs QMX: https://qrp-labs.com/qmx.html
M5 Cardputer ADV: https://amzn.to/4wGHlvQ
Chubby Cable Short: https://amzn.to/4vF7p9V
Keychain cable: https://amzn.to/4wEZtGk
N6ARA Common Mode Choke: https://n6ara.com/product/tinycmc-assembled/
N6ARA TinyPaddle: https://n6ara.com/product/n6ara-tinypaddle-jack-assembled/
My intro to Amateur Radio pamphlet is here: https://www.patreon.com/posts/126015747?utm_campaign=postshare_creator
The Coolest Ham Radio Gear:
As an Amazon Affiliate I earn from qualifying purchases
—————————————————————————————————————————
📻 My new favorite beginners Radio – Baofeng Mini: https://www.radioddity.com/products/baofeng-uv-5r-mini?ref=bkobuwhc
📡 My Big List of No-Regret Gear: https://amzn.to/415oY6s
📡 You can get $10 off the VGC VN-N76 using the code "josh" here: https://www.verotelecom.com/VR-N76-Dual-Band-Handheld-Radio-p2511333.html?
$15 off at Radioddity when you use the code JOSHNASS https://www.radioddity.com/?ref=bkobuwhc
📡 My Favorite ham radio portable gear items! Check out Gigaparts for 2x the points off the gear I use the most!
https://www.gigaparts.com/nsearch/?lp=JOSH
📡 My favorite Handheld radio antenna is from Signal Stuff Signal Stick https://signalstuff.com/?ref=622 (This is an affliate link)
📡 I recommend the Ed Fong J-Pole? https://www.kbcubed.com/DBJ-2H-Amateur-Ham-2m-70cm-Dual-Band-Portable-Rollup-Antenna-by-Ed-Fong-p406009746
📡 Check out Radioddity ham radio radios $15.00 off Coupon code: JOSHNASS https://www.radioddity.com/?ref=bkobuwhc
📡 Great Value HTs: HTs: https://www.buytwowayradios.com/?cmid=amsreGRvTmttM0k9&afid=Mkx1eE1uN2M0S1k9&ats=bHNrMHVhZ3lZcjQ9
📡 Chameleon Antennas make the most robust antennas on the market, check them out here: https://chameleonantenna.com?bg_ref=99VqhYXETt
📻 Support Ham Radio Crash Course Content 📻
————————————————————————
Patreon – https://www.patreon.com/hoshnasi (includes monthly newsletter, stickers and Patron perks)
📸YouTube – https://www.youtube.com/c/HamRadioCrashCourse/membership (includes early access to videos, membership YT badge and custom emojis)
Shop HamTactical: http://www.hamtactical.com
Shop Our Affiliates: http://hamradiocrashcourse.com/affiliates/
Shop Our Amazon Store: https://www.amazon.com/shop/hamradiocrashcourse
As an Amazon Associate I earn from qualifying purchases.
★ FOLLOW ME HERE ★
🪩 Website http://hamradiocrashcourse.com
📸 YouTube https://www.youtube.com/c/HamRadioCrashCourse
💻 Twitch https://m.twitch.tv/hamradiocrashcourse
Podcast https://hamradiocrashcourse.podbean.com/
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📸 Facebook https://goo.gl/cv5rEQ
📸 Twitter https://X.com/Hoshnasi
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📨 Physical Mail Josh Nass P.O Box 5101 Cerritos, CA 90703-5101
Music by Sonic D:
Soundcloud.com/sncd
Twitter.com/sncd
Facebook.com/djsonicd
Build a Meshtastic Node with the N35v4 | Complete Heltec V4 Guide
In this video, I build the Meshnology N35v4 Meshtastic node kit, flash the latest Meshtastic firmware, pair it to the Meshtastic app, and test basic communication with another node.
👉 Thanks JLCPCB For Sponsoring This Video! Find out more about Flexible PCBs here: https://jlcpcb.com/resources/flexible-pcb?from=TemporarilyOffline
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If you are wondering how to build a Meshtastic node from a kit, how to flash Meshtastic firmware, or how to get your first Meshtastic message sent between two LoRa nodes, this video walks through the full process from start to finish.
This build uses the N39 Meshtastic kit. The goal is to go from parts in a box to a working Meshtastic node that can talk to another node.
In this video:
– What comes in the N39 Meshtastic kit
– How the N39 hardware goes together
– How to flash Meshtastic firmware
– How to use the Meshtastic web flasher
– How to connect the node to the Meshtastic app
– How to pair the node with a phone
– How to send a test message
– How to confirm the node is working
– Common build and flashing issues to watch for
This is intended as a beginner-friendly Meshtastic build guide. You do not need to be a radio expert to follow along, but you should be comfortable handling small electronics, USB cables, firmware flashing tools, and basic troubleshooting.
Meshtastic works by creating a mesh network between compatible LoRa nodes. Each node can pass messages along to other nodes, extending communication beyond direct radio range when enough nodes are present. Range depends on antenna choice, terrain, height, power settings, and local RF conditions.
If your Meshtastic node will not flash, will not pair, or will not send messages, check the USB cable, serial driver, boot/reset button timing, firmware target, Bluetooth pairing state, and app settings. Most Meshtastic setup problems are small cable, driver, firmware, or pairing issues rather than a failed device.
This video is part of my Meshtastic playlist where I build, test, flash, compare, and troubleshoot different Meshtastic nodes and LoRa devices.
Meshtastic playlist:
Questions this video answers:
What is the N39 Meshtastic kit?
How do you build an N39 Meshtastic node?
How do you flash Meshtastic firmware?
How do you use the Meshtastic web flasher?
How do you pair a Meshtastic node with your phone?
How do you send your first Meshtastic message?
What do you do after flashing Meshtastic?
Why is my Meshtastic node not talking to another node?
Can a beginner build a Meshtastic node?
What is a Meshtastic LoRa node used for?
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Where possible, all links are affiliate links, this youtube thing is an expensive endeavor and every little bit helps.
0:00 Intro
0:27 Build
6:04 Creator Read
7:40 AIOT Dev Kit?
7:52 Flashing
11:20 First Boot & Overview
12:21 Connect Control Surface Connection
14:22 Send Messages!
15:47 Outro
That’s right, you can get ham radio t-shirts from Amazon, and they’re actually good!
⭐️Checkout My Curated Ham Radio T-Shirt List Here: https://www.amazon.com/shop/k8mrdradiostuff
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As an Amazon Affiliate, I earn from qualifying purchases.
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Use code K8MRD for 10% off
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(USA & Canada get free shipping on orders $99 euros or more!)
⭐️Signal Stuff Signal Stick Antennas: https://signalstuff.com/?ref=4089
